Human Anatomy Vol 1

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INTRODUCTION

Surface marking is the projection of the deeper
structures on the surface. Its importance lies in various
medical and surgical procedures.

The bony landmarks seen in different regions of the
upper limb have been described in appropriate sections.
The surface marking of important structures is given
in this chapter.

illory Artery

Hold the arm at right angles to the trunk with the palm

directed upwards. The artery is then marked as a

straight line by joining the following two points.

. Midpoint of the clavicle.
. The second point at the lower limit of the lateral wall
of axilla where the arterial pulsations can be felt in
living person (Fig. 11.1).
At its termination, the axillary artery, along with the
accompanying nerves, forms a prominence which lies
behind another projection caused by the biceps and
coracobrachialis.

Brochiol Adery

Brachial artery is marked by joining the following two

points.

. A point at the lower limit of the lateral wall of the
axilla. Here the axillary artery ends and the brachial
artery begins.
o The second point, at the level of the neck of the radius
medial to the tendon of the biceps brachii (Fig. 11.2).

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-Ben corson

Fig. 11 .1 : Axillary and brachial aderies with musculocutaneous

nerve

Median nerve crossing

the brachial artery

Fig. 11.2: Median and ulnar nerves in front of arm related to

axillary and brachial arteries

Thus the artery the

upper part of the and

slightly laterally to t its